Police warn teen over Twitter abuse of UK diver Tom Daley

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British police arrest a 17-year-old over Twitter messages to British diver Tom Daley

Rileyy_69 sent Daley a message saying that he had let his father down

Daley's father died last year of brain cancer

Police issue teenager with harassment warning and bailed him to return to station

British police have arrested a teenager suspected of sending an offensive Twitter message to British Olympic diver Tom Daley.

Officers detained a 17-year-old man at a guest house in "the Weymouth area" of the county of Dorset in the early hours of Tuesday morning, they said.

The unnamed teenager was questioned on "suspicion of malicious communications," a police spokeswoman told CNN, and later issued with a harassment warning.

"In addition to the warning the teenager has been bailed to return to the police station at a later date whilst Dorset Police investigate other communications on his Twitter account," police said in a statement.

On Monday, Daley retweeted a message he said he'd received from user "Rileyy_69" shortly after he and his partner Peter Waterfield placed fourth in the men's 10m synchronized dive, failing to win a medal.